*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
.color-container{
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.color-wrapper{
  width: 400px;
  min-height: 300px;
  border:solid 1px #ddd;
  padding: 10px;
}

.color-wrapper .color-show{
  width: 100%;
  height: 300px;
  background: #aef;
}
hr{
  margin: 15px 0;
}